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| Enhanced mid-infrared absorption by Fabry-Pérot cavity resonance of the coupled surface plasmon and phonon polaritons |
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| Content: |
Resonant optical cavity has been utilized extensively in plasmonic nanostructure to enhance a coupling of light and the sub-wavelength scale resonator. The enhanced optical power absorption has been observed in various types of Fabry-Pérot resonant cavity constructed in metal-insulator-metal plasmonic waveguides. For long-wave infrared, surface phonon polaritons have been considered as an alternative to surface plasmon polaritons because of low optical power loss. However, Fabry-Pérot cavity has not been adapted yet because of the complexity to make polar dielectric waveguide which requires both strong field confinement and long propagation length. Here, we experimentally demonstrate the resonant cavity in asymmetric metal-insulator-polar dielectric waveguides presenting a strongly enhanced optical power absorption from the frequency tunable cavity mode of the coupled surface plasmon-phonon polaritons. Our resonant cavity will benefit to design devices for infrared control of fundamental optical processes at the sub-wavelength nanoscale. |
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| Duration: |
00' |
| Contribution type: |
Poster |
| Primary Authors: |
Mr. KACHIRAJU, Satyanarayana (Texas Tech University) |
| Co-Authors: |
Prof. KIM, Myoung-Hwan (Texas Tech University) |
| Presenters: |
Mr. KACHIRAJU, Satyanarayana |
| Material: |
 Poster |
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